Tire-pump.



C. S. MYERS.

TIRE PUMP.

APPLICATION FILED SEPT.14, 1909.

961,153,, Patented June 14,1910.

WlTNESSES: INVENTOR all) CHARLES S. MYERS, 9F COLUMBIA, PENNSYLVANIA.

Tina-ruler.

ceases.

Specification of Letters retent. Patentegd June 1%, lgiil.

Application filed September 14, 1909. Serial No. 517,726.

tire-pumps used for the purpose of inflating pneumatic tires, such as are used on automobiles.

The objects of the invention are to produce a pumpof this classthat will have few parts, be light, strong and very efiective, developing great air pressure with little exertion on the part of the operator.

Another object of the invention -is to produce a pump in which no Washers are employed, the plunger packings being entirely of metal and requiring no adjustment or renewal. I

lvith these and other objects in view my "invention consists in certain construction and combination of parts as will hereinafter be fully described and claimed in the an nexed specification and illustrated in the accompanying drawings, which form a part of this application, and in which like figures of reference refer to corresponding parts in all of the views; but it is fully understood that while I have herewith describedmy in vention as illustrated, I do not confine myself to the exact design as shown, as

slight changes may be made in the construction and combination of the several parts without departing from the spirit of the invention.

in the drawings :-Figure l, is a vertical.

sectional view, showing the construction of the pump. Fig. 2, is a partial sectional detail view of the intake ball valve. Fig. 3, is plan view of the plate. Fig. l, is a persp ctive view of one of the plunger rings. ii i 5, is a side elevation of the plunger Will one of the rings removed. Fig. 6, is a top plan view of the same.

Referring to the drawings, 1, indicates a cylinder, to the bottom of which is secured the base 2, which is formed with the foot hold and a central intake valve, which comprises vertical orifice l, reduced in diameter at 5, to form a seatfor the ball 6, and extendingdownward into the boss '2',

and communicating" with the intake ports 8, which are formed in the side Walls of the boss 7, to prevent sucking dirt from the ground, as would be-the case if the orifice 4, extended directly downward through said boss 7. Above said orifice hand resting in the socket 9, in which the lower end of the cylinder 1, is screw-threaded, is placed a plate 10, which is provided with a central hole or holes ll, number of radial ribs 12, which serveto keep it from close contact with the bottom of said socket- 9; it being retained in place by the end of the cylinder 1, and being for the purpose of retaining the ball 6, in place, and its ribs allowing the air to be drawn upward by the suction of the plunger. Upon one side of said base 2, is formed a boss 13, within which is formed an outlet ball valve to which is attached the hose M, in the usual way.

The outlet ball valve comprises a vertical orifice 15, which is connected near the bottom thereof with the intake valve by the duct 16; while the upper part of said orifice 15, is internally screw-threaded for the re ception of the bushing 17, which is screwthreaded therein and retains the ball 18,. in place and normally resting upon the ball seat 19; while to the upper end. of said bushing 17, is attached the hose 14L Within the upper end of the cylinder 1, is secured plug or cap QO, through which slides the plunger-rod 21, as actuated by the handle 22. A spring 26, is placed upon said rod to cushion its upward stroke. To the bottom oi said plunger rod 21, is secured the plunger, which 1.8 formed of a solid piece outer diameter as the inner diameter of the cylinder 1, and'which is formed with the denand provided with expanding rings; a

base secured upon the lower end of said cylinder, an intake hall check valve termed in said base and comprising a boss formed.

upon the bot-tom of said base and provided with horizontal air ducts extending through the same, a vertical orifice formed in said In testimony whereof I afiix my signature baske, redmgedlin diamflter near its lower enld in presence of two Witnesses; to orm a a seat an communicatin Wit v said air 'ducts, a plate formed with pe rfora- CHARLES My 5 tions in the body thereof and radial ribs and I \Vitncsses:

secured to said base and over said vertical 1 WM. J. COULTER, orifice. I I MABEL L. LEFEVRE. 

